Dell PowerEdge 1850 - Manual (Page 23)

Rack Installation Guide
1-21
6 Holding the left mounting rail at the location you marked, position the flush-mount
mounting flange against the front of the vertical two-post rack and secure it to the two-post
rail with two 12-24 x 0.5-inch pan-head Phillips screws (see Figure 1-14).
7 Slide the adjustable-mounting bracket so that it is against the back of vertical two-post rack
and secure it to the two-post rail with two 12-24 x 0.5-inch pan-head Phillips screws
(see Figure 1-14).
8 Repeat step 6 and step 7 to install the right mounting rail in the rack.
9 Using a 3/8-inch wrench or nut driver, tighten the nuts on the adjustable mounting brackets
on both mounting rails.
Figure 1-14. Installing the Mounting Rails for Flush-Mount Configuration
12-24 x 0.5-inch pan-head
Phillips screws (4 per rail)
two-post open-frame rack
mounting rails (2)